package cn.itcast.bos.service.base.impl;

import java.util.List;
import java.util.Set;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;

import org.apache.shiro.authz.annotation.RequiresPermissions;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import cn.itcast.bos.dao.base.CourierRepository;
import cn.itcast.bos.domain.base.Courier;
import cn.itcast.bos.service.base.CourierService;
@Service
@Transactional
public class CourierServiceImpl implements CourierService {

	@Autowired
	private CourierRepository courierRepository;
	
	//保存操作
	@Override
	@RequiresPermissions("courier:add")
	public void save(Courier courier) {
		
		courierRepository.save(courier);
	}
	
	//分页查询操作
	@Override
	public Page<Courier> findAll(Specification spcifiction,Pageable pageable) {
		
		return courierRepository.findAll(spcifiction,pageable);
	}

	//批量删除快递员
	@Override
	public void delBatch(String[] idArray) {
		for(int i=0; i<idArray.length;i++){
			Integer id = Integer.parseInt(idArray[i]);
			courierRepository.update(id);
		}
		
		
	}

	@Override
	public List<Courier> findnoassociation() {
		Specification<Courier> specification = new Specification<Courier>() {

			@Override
			public Predicate toPredicate(Root<Courier> root, CriteriaQuery<?> query, CriteriaBuilder cb) {
				Predicate p = cb.isEmpty(root.get("fixedAreas").as(Set.class));
				return p;
			}};
		return courierRepository.findAll(specification);
	}
	

}
